ember/template-no-positive-tabindex errors with dynamic value that is of type `0 | -1`

It should check the type of the dynamic value and in this case not error:
<img width="1142" height="169" alt="Image" src="https://github.com/user-attachments/assets/37b6e66a-d333-4c6e-9d09-0e29bb0ba8bd" />